<template>

      <el-container class="home-container">
        <!-- 头部 -->
        <el-header>
          <div>
            <img class="avatar_box" src="../assets/123.png" alt="">

              <span>电商后台管理系统</span>

          </div>

          <el-button @click="logout" type="info">退出</el-button>
        </el-header>

        <el-container>
          <!-- 侧边栏 -->
          <el-aside width="isCollapse ? '64px' : '200px' ">
            <div class="toggle-button" @click="toggleCollapse">|||</div>
            <!-- 侧边栏菜单区 -->
            <el-menu :default-active="activePath" unique-opened :collapse="isCollapse" :collapse-transition="false" background-color="#333744"
            text-color="#fff"
            active-text-color="#ffd04b" :router="true">

            <!-- 一级菜单 -->
            <el-submenu v-for="item in menuList" :key="item.id" :index="item.id +''">
              <!-- 一级菜单模板区 -->
              <template slot="title">
                <!-- 图标 -->
                <i :class="iconsObj[item.id] "></i>
                <!-- 一级菜单 -->
                <span>{{ item.authName }}</span>
              </template>
              <!-- 二级菜单 -->
              <el-menu-item @click="saveNavState('/'+ subItem.path)" :index="'/'+ subItem.path" v-for="subItem in item.children" :key="subItem.id">
                <template slot="title">
                 <!-- 图标 -->
                 <i class="el-icon-menu"></i>
                 <!-- 一级菜单 -->
                 <span>{{subItem.authName}}</span>
                </template>
              </el-menu-item>

            </el-submenu>

          </el-menu>

           </el-aside>

          <!-- 页面主体 -->
          <el-main>
            <!-- 路由占位符 -->
            <router-view></router-view>
          </el-main>
        </el-container>
      </el-container>

</template>

<script>
export default {
  data () {
    return {
      // 左侧菜单数据
      menuList: [],
      iconsObj: {
        125: 'el-icon-user',
        103: 'el-icon-s-tools',
        101: 'el-icon-goods',
        102: 'el-icon-s-claim',
        145: 'el-icon-loading'
      },
      // 是否折叠
      isCollapse: false,
      // 保存高亮信息,被激活的地址
      activePath: ''

    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    // 登录
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
      this.$message.success('您已安全退出！')
    },
    // 获取所有菜单
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')

      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      console.log(res.data)

      this.menuList = res.data
    },
    // 渲染》》》》》》。。。。。。

    // 点击按钮菜单折叠展开
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }

  }

}
</script>

<style lang="less" scoped>
.home-container{
  height: 100%;
}
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 10px;
  align-items: center;
  color: #ffff;
  font-size: 20px;

  > div {
    display: flex;
    align-content: center;
    span {
      margin-left: 15px;
      margin-top: 15px;

    }
  }
}
.el-aside{
  background-color: #333744;
}
.el-main{
  background-color: #eaedf1;
}
.avatar_box{
  height: 50px;
  width: 50px;
  border: 3px solid #eee;
  border-radius: 50%;
  padding: 0;

  img{
      height: 50%;
      width: 50%;
      border-radius: 30%;
      background-color: #eee;

  }
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
